Gall bladder anatomy

Question 1

Describe the epithelium

Answer 1

• Simple columnar epithelium
• mucous membrane
• smooth muscle

Question 2

4 layers of gall bladder

Answer 2

1. muscosa
2. muscularis externa
3. perimuscular connective tissue
4. serosa/adventitia

Question 3

What stimulates the release of bile?

Answer 3

CCK STIMULATED BY THE PRESENCE OF LIPIDS IN THE DUODENUM TRIGGERS THE RELEASE OF BILE
-(Sphincter of Oddi, common bile duct into duodenum)

Question 4

What happens to bile salts in the intestines?

Answer 4

95% OF THE BILE SALTS (~ 0.7% of bile) IS REABSORBED IN THE TERMINAL ILEUM

ONLY A SMALL PORTION OF BILE SALTS ESCAPES THE RECYCLATION AND IS EXCRETED IN FAECES